This site, created by the Universiteit van Amsterdam, allows the user to enter their own data to get results of a Wilcoxon test. The page also provides a brief explanation of how the Wilcoxon test functions. Overall,...

Sampling is choosing which subjects to measure in a research project. Usually the subjects are people, but subjects could also be organizations, cities, even nations. Measurement is typically accomplished through survey...

These applets, presented by Virginia Tech's Department of Statistics, address the notion of "power." Users can perform one or two tailed tests for proportions or means for one or two samples. Set the parameters and...

This applet, created by Rice University's Virtual Lab in Statistics, allows students to manipulate a histogram and observe changes in the mean and median. The site includes links to exercises and descriptions of...

This applet demonstrates the partitioning of sums of squares in analysis of variance (ANOVA). It includes some sample values and allows the user to make adjustments, which then shows the new values in the ANOVA table. ...